Analysis Audi 1.9TDI PD engine with Valvoline 5W40

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Hello everyone!

My first post, i'm new here and from Holland.

This is the analysis of my Audi 1.9 tdi 130hp PD engine.
173.000miles, lube time was 9000miles and 4 months old.

The comment of the analysis says: (in Dutch) Everything looks fine.

I like the oil, the engine uses no oil and runs great, and the oil is not very expensive.

What do you think? Looks to me it can last longer?

Oil: Valvoline 5W40 Durablend MXL VW505.01 with original oil filter

Typical Properties
5W-40
Viscosity, mm2/s @ 100 ºC
14.0
Viscosity, mm2/s @ 40 ºC
84
Viscosity Index
169
Viscosity, mPa.s -25°C
Viscosity, mPa’s -30°C.
Sulphated Ash, wt. %
0.8
TAN; mg KOH/g (ASTM D-664)
2.7
TBN; mg KOH/g (ASTM D-2896)
7.6
Pour Point, ºC
-42
Specific Gravity @ 15/15ºC
0.851
Flash Point, COC, ºC
234


GroteFoto-A4OGDLNU.jpg
 
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1% fuel seems high (considering the number of miles per month). Viscosity dropped from 14 to 12.4 (either from fuel, shearing, or both). Wear metals don't appear to be affected though.

Soot is nice and low though. Good TBN remaining.

It would be nice if they did a flashpoint analysis too.

9000 miles is essentially the normal fixed-interval of 15K km, I'd say change the oil, sample again at 15K km on the new oil.
 
Look like a decent UOA from a PD. Iron, aluminum, copper & lead are low; no chromium. How's your air filter? Silicon is a bit elevated so there may be some dirt ingestion. I would get that looked at before running this oil more than 16k km.
 
Thanks for the advice.

I changed with Kendall Victory synthetic vw505.01 to try.
Now the engine is consuming more oil, and the oil is more expensive. So I think to switch back to the Valvoline.


The car is mostly used on the highway indeed.
Air filter is 30k km old, it's a oem airfilter.

I run this Valvoline oil for almost 100k km until now.
 
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